Natural slate and Artificial slate

Natural slate is divided into two types: marble and granite. In general, all textured, called "marble"; to spot the main, known as the "granite." This is in a broad sense. From the narrow sense, the marble refers to the marble produced in Yunnan Dali. In fact, now the country is not much slate is Dali out. The two can also be distinguished from the geological concept. Granite is igneous rock, also known as acidic crystal deep diagenesis, is the most widely distributed igneous rock, composed of feldspar, quartz and mica, rock hard and dense. Its composition to silica-based, accounting for about 65% -75%.

The so-called igneous rock is the underground magma or volcanic spilled lava condensed crystallization of the rock. The content of silica in the igneous rock, the nature of the feldspar and its content determines the nature of the slate. When the content of silica is greater than 65%, it belongs to the acid rock, this rock is feldspar, plagioclase, quartz and other basic minerals to form crystals, the material structure, known as granite.

Marble is the crust in the original rock through the crust in the formation of high temperature and high pressure metamorphic rocks. The internal forces of the crust have led to changes in the quality of the original rocks, that is, the structure, structure and mineral composition of the original rocks have changed. The new rocks formed by qualitative change are called metamorphic rocks. Marble is mainly composed of calcite, limeslate, serpentine and dolomite. The main component of calcium carbonate-based, accounting for more than 50%. As the marble generally contain impurities, and calcium carbonate in the atmosphere by carbon dioxide, carbide, water vapor role, but also easy to weathering and erosion, leaving the surface soon lost luster. Marble is generally of a relatively soft nature, which is relative to granite.

Because the Natural slate surface has fine pores, so relatively poor in the dirt resistance, generally in the processing plant will be in its surface treatment. In the interior decoration, TV countertops, windowsill, indoor floor, etc. suitable for the use of marble. The threshold, cabinet countertops, outdoor ground is suitable for the use of granite. One of the cupboard view is good to use dark granite.

Now the market sales of Natural slate, part of the color is processed by the people, these slates generally use six months to a year will reveal its true face. It is obvious that the market is now a large flower green, many are stained, not the real color.

Also note that the back of the grid, there are two kinds of this situation:

① slate itself is more brittle, must be added grid, such as the Spanish beige.

② cut corners, the thickness of these slate is thin, and strength is not enough, so add the network. The general color of the deep slate if there is style, most of this is the reason. In the case of

2.Artificial slate is unsaturated polyester resin as binder, with natural marble or calcite, dolomite, silica sand, glass powder and other inorganic powder, and the amount of flame retardants, color, etc., by mixing ingredients , Porcelain casting, vibration compression, extrusion and other methods made of curing.

Artificial slate is based on the actual use of Natural slate problems and research out, it is moisture, acid, high temperature, piecks have made great progress. Of course, man-made things naturally have man-made shortcomings, artificial slate is generally lack of natural nature, texture is relatively false, so much used for cabinets and other places for practical requirements, as well as some harsh environments, such as kitchen, ; Windowsill, the ground, etc. to emphasize the decorative place, the use of less.

Another factor that hinders the use of artificial slate is human factors. As the artificial slate production process is very different, performance, features are not exactly the same, so the advantages of the above is not necessarily the performance of the artificial slate you buy. Currently on the market of imported artificial slate in the performance is better. Such as the import of marble allows sandpaper to polish the surface of the scratches, the user to deal with it is no longer obvious, and many domestic artificial slate obviously can not support this talent flow, the more polished the more rotten.

Buy Artificial slate, it is best to take a model for bad test, such as pouring soy sauce or oil and the loss test. In summary, what kind of slate to buy, according to places, the use of different and personal economic capacity may be.

If you are picking a good finished finishes, the quality of the slate can be identified from the following four aspects:

A view, that is, the visual observation of the slate surface structure. Uniform fine material structure of the slate with a delicate texture, is the top of the slate; coarse and unequal grain structure of the slate its appearance is poor, mechanical and mechanical properties are not uniform, the quality to be worse. In addition, the Natural slate due to the impact of geological effects, often produce some fine pulsation, micro-cracks, slate most likely along the rupture of these parts should be noted that removed. Lack of small angle of the slate is more beautiful, especially when choosing attention. Observe the time to be careful, if necessary, with a flashlight to go, so that when the light dimmed judgments. In the case of

Two, that is, the size of slate size specifications, so as not to affect the splicing, or cause stitching after the pattern, pattern, line deformation, affecting the decorative effect. In the case of

Three listen, that is, listen to the sound of the sound of slate. Good quality, the internal dense uniform and no micro-cracks in the slate, the percussion sound crisp and sweet; the contrary, if the slate inside the existence of micro-cracks or veins or due to weathering lead to loose contact between the particles, the percussion rough dumb. This method of identification as far as possible in a quiet environment.

Four tests, that is, with a simple test method to test the quality of slate is good or bad. Usually in the back of the slate drop a drop of ink, such as ink quickly spread around the leaching, that is, the slate particles within the loose or there is a slight fissure, slate quality is not good; the other hand, if the ink drops in place, then explain slate is dense, good texture. However, according to our investigation that some poor quality slate in the drop after the ink, the ink can stay in place, this is because the surface of the slate is being painted on the waterproof layer Bale. Do the dipping test when the note also the way to try the back of the slate can be resolved in general.